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Operating Systems AIX Question about HACMP for active-active mode Post 302366680 by qiulang on Friday 30th of October 2009 05:44:19 AM
Old 10-30-2009
Thanks for the answer.

Actually what I did not understand before was what was the value of running 2 instances of the same application on one node during the failover? If the resource group contains the same application on both nodes, why not just make takeover not happen here ? Because from the client point of view, the service still exists while running two same instances on one node may make the node overloaded.

As zxmaus pointed out that two same instances can server different purposes(say, database 1 is used for trading, database 2 for reporting). I think that makes sense. But if two instances serve the same purpose I still don't see the value in it.
 

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SoFullPath(3)							       Coin							     SoFullPath(3)

NAME
SoFullPath - The SoFullPath class allows examination of hidden children in paths. SoPath allows only access from the head node to the first node with hidden children, but not any further. SYNOPSIS
#include <Inventor/SoFullPath.h> Inherits SoPath. Inherited by SoTempPath. Public Member Functions void pop (void) SoNode * getTail (void) const SoNode * getNodeFromTail (const int index) const int getIndexFromTail (const int index) const int getLength (void) const Additional Inherited Members Detailed Description The SoFullPath class allows examination of hidden children in paths. SoPath allows only access from the head node to the first node with hidden children, but not any further. Since the SoFullPath is derived from SoPath and contains no private data, you can cast SoPath instances to the SoFullPath type. This will allow you to examine hidden children. (Actually, you are not supposed to allocate instances of this class at all. It is only available as an 'extended interface' into the superclass SoPath.) Member Function Documentation void SoFullPath::pop (void) [inline] This method overrides SoPath::pop() to allow clients to get at all the nodes in the path. Reimplemented from SoPath. SoNode * SoFullPath::getTail (void) const This method overrides SoPath::getTail() to allow clients to get the tail node, counting internal path nodes. Reimplemented from SoPath. SoNode * SoFullPath::getNodeFromTail (const intindex) const This method overrides SoPath::getNodeFromTail() to allow clients to get the node positioned index nodes from the tail, counting internal path nodes. Reimplemented from SoPath. int SoFullPath::getIndexFromTail (const intindex) const This method overrides SoPath::getIndexFromTail() to allow clients to get the child index number for nodes based on their position from the tail, counting hidden nodes. Reimplemented from SoPath. int SoFullPath::getLength (void) const This method returns the length of the path, counting hidden nodes also. Reimplemented from SoPath. Author Generated automatically by Doxygen for Coin from the source code. Version 3.1.3 Wed May 23 2012 SoFullPath(3)
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